Propeller.



JEAN-BAPTIST? CAMET. FROPELLER| APPLICATION FILED JAN. 3, 19|4.

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JEAN-BAPTISTE CAMET, or BAYONNE, FRANCE.

PROPELLER.

To all whom t may concern: y

Be it known that I, JEAN-BA1 TISTE CAMET, citizen of the French Republic, residing at 3 Rue Pontrique, Bayonne, Basses- Pyrenes, France, have invented new and useful Improvements in Propellers, of which l the following is a specification.

This invention relates to a propeller which is composed of two separate parts namely: 1,-a semicylindrical case closed on three sides; 2,-a shaft with two or three or four paddles mounted in said case. In order to operate this apparatus must be submerged completely in the liquid or fluid and be mounted at the place where usually the propeller screw is positioned for which this apparatus is substituted. The paddles revolve always in the same direction and strike the fluid after the manner of wings or fins. As soon as the paddles get into the casing,

they do not act until they come again outv of said casing. Steering is effected by turning the casing which has simply to be turned upside down in order to reverse the direction of movement.

In order to clearly explain the invention several forms of construction are shown in the accompanying drawings, all forms of construction being based upon the principle hereinbefore mentioned and given by way of example only.

In the accompanying drawings vz-F igures 1, 2 and 3 are perspective views of apropeller with 2, v3 and A paddles respectively. Figs. 41, 5, 6 and 7 are plan views of the propeller'Fig. 1 representing the casing in different positions. Fig. 8 is a perspective view of a double propeller. Figs. 9, 10 and 11 are plan views of the double propeller in different positions. Fig. l2 is a perspective view of another form of construction. Figs. 13 and 111 are plan views of the propeller of Fig. 12.

The propellers of Figs. 1, 2'and V3 consist of a semicylindrical casing 1 with end plates 2 in which the bearings 3 for the vertical shaft are arranged. This shaft has, according to the work to be expected from the propeller 2, 3 or l blades 4 which always turn in the same direction striking the fluid like the fins of fishes or the wings of birds.

cording tothe position which it adopts, produces a forward or backward movement in alllthe directions v'of the same plane. Ifv the casing is in the position shown in Fig. 4 the vessel moves in the direction of the arrow A. If the casing 1 is'moved in the direction X (Fig. 5) the vessel no longer moves in the direction of the arrow A but in the direction of the arrow B and so on. Fig. 6 shows that the direction in which the vessel moves, thatl ofclthearrow C, is opposite to the direction offthe arrow A (Fig. A). -If the casing 1 is` turned, the engine is not stopped so that the paddles 4L turnv always in the same direction. This apparatus'therefore permits doing away with the rudder generally used, which can actv only through the resistance which it offers and consequently reduces the speed. The propeller axis can be arranged either vertically or horizontally according to its' application but if it has to work in the water it is preferably arranged vertically in order to permit the steering in any direction.

Fig. 8 shows a double propeller and the positions of the -casings 1 with regard to one another if the vessel has to move in the direction of the arrow D, Figs. 9, 10 and 11 showing the positions of the casings if the vessel hasto move inother directions.

Fig. 12 shows a double superposed pro-A peller and Figs. 13 and 14; illustrate the positions which the casings 1 must Vadopt for reverse direction lis obtained.

Patented Oct. 1"?, 1916. Application filed January 3, 1914. ,Serial No. 810,113. Y

It'has to be understood that the invention is not strictly limited to the examples describedr but that it can be applied for any kind of shipping and that its application to dirigible balloons will permit them to immediately reascendf,if for example the-landing could not be properly effected, and that the shapes, dimensions, arrangements and materials can vary according to the applications of the invention.

I claim- A propeller comprising a pair of semicylindricaly casings having end plates provided with projecting bearings intermediately thereof, shafts journaled in said bearings andV disposed in parallel relation and paddles fixed to the shafts for rotation therewith, said paddles being operative eX- Copies of this patent may be obtained for ve cents each, by addressing the and inoperative interiorly of the casing said casings being teriorly of the casing,

supported in superposed relation and said 15 JEAN-BAPTISTE CAMET.

Witnesses:

ALBERT HERAULT, ALFRED K. MOE.

Commissioner of Patents,

Washington, D. C. 

